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Virnig V50 Closed Front Rotary Brush Cutter

Virnig V50 Closed Front Rotary Brush Cutter

Cuts up to 4″ diameter trees and clears grass and brush for a consistent finished look.

  • FIVE DIRECT DRIVE MOTOR OPTIONS WITH RELIEF VALVES. EATON® HIGH FLOW MOTORS RATED FOR MAX PRESSURE OF 4100 PSI & SAI® PISTON MOTOR UP TO 4500 PSI
  • HYDRAULIC BRAKING STOPS FLYWHEEL WITHIN 10 SECONDS
  • STANDARD MOTOR GUARD & SPINDLE GUARD
  • CIRCULAR FLYWHEEL WITH 3 UPDRAFT BLADES BOUNCES OFF STUMPS
  • CHAIN CURTAIN PREVENTS FLYING DEBRIS
  • REPLACEABLE FRONT SKID SHOES

DO NOT OPERATE CUTTER WITHOUT A SHATTERPROOF CAB ON LOADER.

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Specifications
ModelRBV60RBV66RBV72RBV78
Cut Width60.0 in / 1524 mm66.0 in / 1676 mm72.0 in / 1829 mm78.0 in / 1981 mm
Overall Width66.0 in / 1676 mm72.0 in / 1829 mm78.0 in / 1981 mm84.0 in / 2134 mm
Overall Height20.9 in / 531 mm
Overall Depth81.8 in / 2078 mm87.8 in / 2231 mm93.8 in / 2382 mm99.8 in / 2535 mm
Deck Height8.8 in / 224 mm
Minimum Cut Height1.8 in / 46 mm
Cutting Capacity, Diameter4.0 in / 102 mm
Deck Thickness¹: Top & Side0.25 & 0.25 in / 6.4 & 6.4 mm
Recommended Flow Rate14 - 25 GPM / 53 - 95 L/min / 25 - 42 GPM / 95 - 159 L/min / 33 - 45 GPM / 125 - 170 L/min
Max Operating Pressure3500 PSI / 24.1 MPa / 4100 PSI / 28.3 MPa / 4500 PSI / 31.0 MPa
Approximate Weight²1180 lb / 535 kg1325 lb / 601 kg1435 lb / 651 kg1540 lb / 699 kg
Recommended Loader CapacityGreater than 1500 lb / 680 kg

¹ Deck material is Grade 50 Plate (50,000 PSI / 345 MPa minimum yield strength).
² High Flow motor options add approximately 70 lb / 32 kg to model weight.

Blade Tip Speeds (FPM / m/min)

Standard Flow Models (14–18 GPM / 53–68 L/min)
Model14 GPM Minimum18 GPM Maximum
RBV60-1810,365 FPM / 52.66 m/s13,325 FPM / 67.35 m/s
RBV66-1811,400 FPM / 57.91 m/s14,660 FPM / 74.75 m/s
RBV72-1812,440 FPM / 63.50 m/s15,995 FPM / 81.57 m/s
RBV78-1813,475 FPM / 68.62 m/s17,325 FPM / 87.98 m/s
Standard Flow Models (18–25 GPM / 68–95 L/min)
Model18 GPM Minimum25 GPM Maximum
RBV60-2510,530 FPM / 53.48 m/s14,630 FPM / 74.24 m/s
RBV66-2511,585 FPM / 58.81 m/s16,090 FPM / 81.83 m/s
RBV72-2512,640 FPM / 64.33 m/s17,555 FPM / 89.15 m/s
RBV78-2513,695 FPM / 69.75 m/s19,700 FPM / 99.60 m/s
High Flow Models (25–33 GPM / 95–125 L/min)
Model25 GPM Minimum33 GPM Maximum
RBV60-HF3311,480 FPM / 58.34 m/s15,155 FPM / 76.88 m/s
RBV66-HF3312,630 FPM / 64.32 m/s16,670 FPM / 84.93 m/s
RBV72-HF3313,775 FPM / 69.86 m/s18,185 FPM / 92.78 m/s
RBV78-HF3314,925 FPM / 75.91 m/s19,700 FPM / 99.60 m/s
High Flow Models (33–42 GPM / 125–159 L/min)
Model33 GPM Minimum42 GPM Maximum
RBV60-HF4210,060 FPM / 51.09 m/s12,805 FPM / 65.31 m/s
RBV66-HF4211,065 FPM / 56.23 m/s14,085 FPM / 71.52 m/s
RBV72-HF4212,070 FPM / 61.45 m/s15,365 FPM / 78.28 m/s
RBV78-HF4213,080 FPM / 66.64 m/s16,645 FPM / 84.72 m/s
High Pressure Models (33–45 GPM / 125–170 L/min)
Model33 GPM Minimum45 GPM Maximum
RBV72-HP4511,780 FPM / 59.96 m/s16,060 FPM / 81.91 m/s
RBV78-HP4512,780 FPM / 64.98 m/s17,395 FPM / 88.58 m/s

Flow rates are shown in gallons per minute (GPM) / litres per minute (L/min), and blade tip speeds are listed in feet per minute (FPM) / meters per second (m/s).

FAQs

Virnig V50 Rotary Brush Cutters are designed to clear undergrowth and cut small trees up to 4” in diameter. Rotary Brush Cutters can also be equipped with a floating deck, rear roller, and swivel casters to give a more finished look when mowing grass and brush.

Swivel Casters and a Rear Roller will help produce a better cut, a smoother ride, and limit gouging/scalping. These options also provide extra value by minimizing wear on the underside of the skid steer brush cutter frame and skid shoes. Pair with a floating deck to maximize effectiveness.

The floating deck provides a more consistent cut on uneven terrain. The floating deck also helps prevent scalping and gouging of the ground. In situations where the floating deck is not needed, it can easily be locked out with two bolts, which are provided.

  • The V50 Rotary Brush Cutter’s three-blade flywheel system is about 200 pounds lighter than a V60 Open Front Rotary Cutter, which has an additional fourth blade.
  • The V50 Rotary Brush Cutter can be paired with an optional Rear Roller or Swivel Casters. These options are not available for the V60 Open Front Rotary Cutter.
  • The V50 Standard Deck Rotary Brush Cutter is 300-800 pounds lighter than a V60 Open Front Rotary Cutter.

No. Running the flywheel system in reverse will cause the cutter to cut poorly, easily stall, and have minimal torque.

The Rotary Brush Cutter is designed to spin counter-clockwise and takes 7-10 seconds to come to a complete stop. If the flywheel is running in reverse, slow down will be much faster and very loud.

Operating the Rotary Brush Cutter’s flywheel counter-clockwise is essential for proper operation and preventing damage to the cutter’s blades and motor.

The spindle is the most expensive performance component on a skid steer brush cutter. It is responsible for smoothly transferring power from the hydraulic motor to the flywheel and absorbing impact that could damage the hydraulic motor.

High-performance skid steer brush cutters require heavy-duty spindles to ensure reliability and productivity.

Standard pressure relief valves protect the motor and the loader’s hydraulic system from damaging pressure spikes. When the maximum pressure point is reached, the valve opens to prevent pressure from rising any further. This prevents seals or other internal components from breaking due to excessive pressure.

Skid steer brush cutters are capable of throwing debris over 200 feet and can cause serious bodily harm or death if not used with a shatterproof cab.

For efficient operation, purchase a skid steer brush cutter with a cut width that is wider than the tires or tracks of your loader.

Loader capacity should also be considered. Selecting a skid steer attachment that is too wide will add weight, volume, and surface area, all factors that could affect performance.

The motor flow rate should be optimized to match the skid steer’s flow rate. These are measured in gallons per minute (GPM). Running a higher GPM than the motor is rated for can potentially damage the motor and will void the warranty. All Virnig skid steer attachments with hydraulic motors have a zero overflow rating to prevent premature failure.

Generally, higher GPM is better. Higher GPM provides more torque which prevents the cutter from losing power as easily and allows the cutter to return to cutting speed faster. There may be situations in which this is not true. For more information, contact a DTE Equipment.

Options

Rear Roller

  • Compacts chopped material and produces a better cut by limiting gouging and scalpling.
  • Roller is flush with V50 Closed Front Cutter bottom.

Swivel Casters

  • 360° rotating swivel casters produce a better cut by creating a smoother ride and limiting gouging and scalping.